Method for combusting high alkali metal coal
An alkali metal and metal technology, which is applied in the field of boiler combustion, can solve the problems of restricting the application of high alkali metal coal, and achieve the effects of reducing contamination and corrosion, reducing fouling, and increasing the area.
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[0019] The present invention will be further described in detail below in conjunction with specific embodiments.
[0020] A method of burning high-alkali metal coal, combined with the characteristics that the temperature has a great influence on the volatilization of alkali metals. Before 900°C, the volatilization amount is small, and after 900°C, the volatilization amount of sodium is nearly doubled. High alkali metal coal is burned at a temperature of 780°C to 870°C. In this temperature range, it can ensure the stable combustion of the boiler and maintain a relatively low temperature, thereby effectively limiting the volatilization of alkali metals, controlling the boiler from coking, reducing contamination, corrosion, etc.
[0021] A method for burning high-alkali metal coal. The high-alkali metal coal is fed into a fluidized bed boiler for combustion, the bed temperature is set at 780°C to 870°C, and the slag containing alkali metal is discharged without participating in t...
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